A very limited/basic synth............but it is great at what it does. The keyboard is split into 2 parts (left hand/right hand), each with Brass, Piano, Clavichord, Cello, and Violin Presets. It does have a very basic VCF (only can be used with brass preset) which has Attack, Decay, Emphasis (Resonance), and Contour (Cutoff). You can assign vibrato and Sustain too. The Brass sound can be pretty impressive (especially if you strip if of all its resonance- very fat bass). The filter self oscilates too. This comes in handy if you set the Attack/Decay to ascend/descend. It also comes with an attachable lid for easy transporting (except it is darn heavy).